A tax return service will cost you depending on the complexity of your financial situation. Basic self-employed or freelance returns are usually available at a basic and reasonable price, whereas situations with multiple forms of income, rented out properties, or investments might be a little more expensive. A large number of accounting companies offer clear charges without any extra charges. The primary benefit of employing professionals is that in most cases, their experience can save you more than the fee as they will optimize deductions, discover tax breaks, and file correctly which can result in costly fines by HMRC.